Question

The ratio of the present age of a son and his father is
1:5 and that of his mother and father is 4:5. After 2
years the ratio of the age of son to that of his mother
becomes 3:10. What is the present age of the father?​

Answer 1

Answer:

Assume son’s age is x, then Father age is 5x.

Assume son’s age is x, then Father age is 5x.If Father age is 5x, mother age is 4x.

Assume son’s age is x, then Father age is 5x.If Father age is 5x, mother age is 4x.After 2 years son & mother age can be as follows(Mother age : son age → 3: 10)

Assume son’s age is x, then Father age is 5x.If Father age is 5x, mother age is 4x.After 2 years son & mother age can be as follows(Mother age : son age → 3: 10)3*(4x + 2) = 10(x + 2)

Assume son’s age is x, then Father age is 5x.If Father age is 5x, mother age is 4x.After 2 years son & mother age can be as follows(Mother age : son age → 3: 10)3*(4x + 2) = 10(x + 2)12x + 6 = 10x + 20

Assume son’s age is x, then Father age is 5x.If Father age is 5x, mother age is 4x.After 2 years son & mother age can be as follows(Mother age : son age → 3: 10)3*(4x + 2) = 10(x + 2)12x + 6 = 10x + 202x = 14

Assume son’s age is x, then Father age is 5x.If Father age is 5x, mother age is 4x.After 2 years son & mother age can be as follows(Mother age : son age → 3: 10)3*(4x + 2) = 10(x + 2)12x + 6 = 10x + 202x = 14x = 7

Assume son’s age is x, then Father age is 5x.If Father age is 5x, mother age is 4x.After 2 years son & mother age can be as follows(Mother age : son age → 3: 10)3*(4x + 2) = 10(x + 2)12x + 6 = 10x + 202x = 14x = 7So the present age of son is 7 years, Father is 35 and mother is 28 years.

Answer 2

Answer:

let the present age of son ,mother and fater be

1x,4x and 5x respectively

after two years age of son will be x+2

and age of mother be 4x+2

x+2/4x+2=3/10

cross multiply we get

10x+20=12x+6

2x=12

x=6

age of father=5x

=5*6=30